Construction of subheated regenerative coke ovens with vertical heating flues



W. HEBY. CONSTRUCTION 0F SUBHEATED REGENERATIVE COKE ovENs WITH VERTICALHEATIN'G nues,

APPLICATION FILED JULY 13,1920.

` Mmmm; 21,1922

Patented Non. 2l, i922 STATES tritate? WALTHER HIBY, 0F NOORDWIJK AAN ZEE, NETHERLANDS, SSGOR T0 JUHAN GHRISTIAAN BARON VAN HAERSOLTE VAN MEEST, 0F DRXEBERGEN, NETH- ERLNDS.

JONSTB'UCTON 0F SUBHJEATED REGENERATIVE COKE @VIENS WELTH VERTICA 'I HEATING. FLUES.

Application tiled July 13, i920. Serial No. 395,009.

To all whom t may concern:

Be it known that I, WAL'rHER Hier, a subject of the German Republic, residing .at Noordwijk aan Zee, the Netherlands, have invented certain new and useful Improvements in the Construction of Subheated Regenerative Coke Ovens 'with Vertical Heating F lues (for which I have made application for patent in Germany, March 31, 1917), of which the following is a specification.

In my specification No. 396,006, led July 13, 1920, l have claimed in a subheabed regenerative coke-oven with vertical heating iues the arrangement that each individual heating tlue receives at its lower end heating gas Jfrom a particular burner and preheated air for combustion from a particular Y eheckerwork-chamber and that both gas and air are to'be regulated from the subways underneath the ovens. This oven is adapted only for the use o gases of fairly high heating power, such as the distilled gas of the coke ovens themselves. Preheating of the gas, which is necessary in the case of lean gas, cannot be carried to a high degree in the ease of rich distilled coke oven gas. in accordance with my present'invention, utilize the space under the ovens and oven-walls and by making the air-checkerwork-chambers higher and narrower' than illustrated in specification No. 396.006 l am able to arrange for each heating lflue a separate checkerworkchamber for preheating the gas. Such an oven would be chiefly an oven 'for the use of lean gas, but it also can be heated without trouble with strong gas, when care is taken, that the preheating of this gas is not driven too far. rlhis may be reached in the case of heating with strong gas by merely cuttin down or shutting ofi' all together the waste lieat going through the gas-preheating -chambers and passing the rest of the wasteheat through the air preheating-chambers. It is, of course, of the greatest importance, that the chambers are chosen large enough, which can easily be effected by making them higher.

The invention is shown on the drawing in Figures 1, 2 and 3. To each vertical heating flue a corresponds a checkerwork-chamber b for the preheating of the gas and a flue lc and the oheat from the air-preheating chambers through Hue Z to the stack-flue. By means of dampers in the flues Ic and Z the waste-heat from the gasand air-chambers may be regulated separately.

1With the position of the reversing valves, as indicated in the drawing, the operation of heating the oven is as follows: The heating gas is supplied to the main in the middle and underneath the oven and is delivered to the right-hand gas pipes e by the vertical branch pipes by means of a three-way cock. The gas then passes thru burner pipes d, each of which is provided with a regulating cock lz., the gas passing into the checkerwork chamber I) of theright half of the oven wall, where it'is distributed, the gas rising into the checkerwork chamber spaces 72 and being discharged at about the height ot' the sole of the oven chamber into the lower end of the heating ilue's a of the right half of the oven. y

The air enters thru the open valve at the outer right end of the air pipe g, divided in the middle, and is supplied by means of the branch pipes f into the checkerwork chamber c of the right alf of the oven wall. In the branch pipes regulating slides i are located. The air rises in the chambers o, is heated in the cheekerwork and likewise is discharged at about the heightof the sole of the oven chamber into the lower end of the heating dues a of the right half of the oven.

The enterin as now burns with the previousl beate air in the wall tlues a of the right-hand half of the wall, passing u wards. rlihe burned gases pass over to the left hand of the oven wall by means of the horizontal connecting channel arranged at the upper end of the heating flues, then descend by means of the wall fines a of: this haltl land divide. Part of the burned gases pass thru the checkerwork chamber Y), sole channel 7c and a connecting piece to the chimney passage on the left and part of them likewise pass to the left chimney passage by means of the checkerwork chamber c, sole channel Z and another connecting piece. During this mode of operation, the valves in the right hand connecting pieces leading to the chimney passage are closed but those in the left-hand passageways are open. Moreover the inlet flap valve on the right half of the pipe g is open and that on the left half of the pipe g is closed. By means of the three way gas cock, the gas is supplied to the right branch e.

After a given time the before-mentioned modes of operation are reversed and the direction of the heating is then from left to right.

By the new constructionit is an easy matter to adapt the preheating of the gas to its caloriic value and to its composition, as only such quantities of waste-heat are led through the gas-preheating chambers as correspond to the intended degree of preheating. `With very strong gases, the gas preheating chambers may be cut off from the off-heat altogether, in this case they act only as recuperating chambers.

Having now particularly described my invention, what I 4claim and desire to secure by Letters Patent is 1. In ahorizontal coke oven with vertical heating flues, said oven being raised and provided with subways underneath the oven to permit the operation of the regulating devices, the combination with each of said vertical lues of a separate checkerwork regenerator for preheating the air and another separate checkerwork regenerator for the preheating ot' the gas, both checkerwork regenerators being connected to the flue at its lower end, means foi-'supplying gas and air to said regenerators, regulating devices for each regenerator, located in the subway, both sets of regenerators being situated in the space between the plane of the floors of the oven chambers and the ceilings of the subways.

2. In a horizontal coke oven with vertical heating flues, and provided with subways for operating the regulating devices, the combination with each of said lues of a separate checkerwork chamber for the preheating of the air and another separate checkerwork chamber for thenpreheating of the gas, said checkerwork chambers being located betweenvthe plane of the floors of the oven chambers and the ceilings of the subways, a system of gas ipes for introducing a specified amount o heating gas to each gas preheating checkerwork and another system of air pipes for delivering a certain amount of air to each air reheating checkerwork, regulatable devices tor the air and gas pipes, sole flues connected with the air and gas preheating chambers and valves controlling'the sole lues, the direction of flow being reversible.

3. In a horizontal coke oven with vertical heating lues, said oven being raised and provided with subways underneath the oven to permit access to and operation of the regulating devices, the combination with each of said vertical lues of a pair of separated, checkerwork regenerators, one of said regenerators adapted to deliver preheated air and the other preheated gas to the flue, each pair of separated checkerwork regenerators being likewise adapted to receive the waste heat from the said flues and means'for distributing the waste heat supplied to one or both sets of regenerators of one half of the oven, at will, whereby said flues and regenerators may be utilized for preheating either strong or lean gas, said regenerators being located between the ceilings of the subways and the plane of the floors of the oven chambers.

4. In a horizontal coke oven with vertical heating flues said oven being raised and provided with subways underneath the oven to permit access to and operation of the regulating devices, th-e combination with each of said vertical flues of a pair of separated checkerwork regenerators, one of said regenerators adapted to deliver preheated air and the other preheated gas to thc flue, an air pipe for each of said air preheating regenerators, a supply main for supplying air to said air pipes, a valve for said supply main, a gas pipe for supplying gas to each of said gas preheating regenerators, a supply main for supplying gas to said gas pipes, said gas main being located in the subway, a valve controlling the Vdischarge of gas from the said\gas supply main, each pair of checkerwork regenerators for each flue being likewise adapted to receive the waste heat therefrom, said preheating regenerators and said waste heat regenerators being located in the space between the ceilings of the subways and the floors of the `oven chambers.

5. In a horizontal coke oven with vertical heating lues, said oven being raised and provided With subways underneath the oven -to permit access to and o eration of the regulating devices, the com ination with each of said vertical flues of a pair of separated checkerwork regenerators, one of said regenerators adapted to deliver preheated air 'and the other preheated gas to the flue, said preheating regenerators being arranged side by slde in rows running transversely of the oven chambers, each pa1r of separated checkerwork regenerators for each of the flues, being also adapted to receive thev wast/e heat mamie? therefrom. and means for distributing the waste heat from each flue into one or both of said set of receiving regenerators for one half of the oven heating wall at wiil, Whereby said iues and regenerators may be utilized for preheating either strong or lean gas, said regenerators being located between the ceilings of the subways and the floors of the oven chambers.

6. In a horizontal coke oven with vertical heating lues, said oven being raised and provided with subways underneath the oven to permit access to and operation of the regulating devices, the combination with each of said vertical flues of a pair of separated checkerwork regenerators, one of said regenerators of the pair being located beneath the oven chamber and the other regenerator being located beneath the heating Wall adjacent to one side of the oven chamber, each pair of separated checkerwork regenerators being also adapted to receive the waste heat from the vertical flue, and means for distributing the waste heat into one or both of said receiving regenerators, whereby said lues and regenerators may be utilized for preheating either strong or lean gas, said regenerators being located between the ceilings of the subways and the floors of the oven chambers.

T. In a horizontal coke oven provided with oven chambers and heating walls for each oven chamber, each comprising a plurality of vertical heating iues. the said fines being divided into a right-hand and left-hand set, said oven being raised and provided with subways underneath the oven to permit access to and operation of the regulating devices, the combination with each of said vertical lues of a pair of separated checkerwork regenerators, one of said regenerators adapted to deliver preheated air and the other preheated gas to the flue, said regenerators being likewise divided in a right-hand and left-hand set, each pair of separated checkerwork regenerators being adapted to receive the waste heat from the said flue, means for distributing the Waste heat into one or both of said receiving regenerators, whereby said flues and regenerators may be utilized 'for preheating either strong or lean gas,

said regenerators being located between the ceilings of the subways and the ioors of the oven chambers, a chimney passage at each end of t-he oven'and means for reversing the ow of the gases and the direction of the heating from one to the other half of the oven battery.

8. In a horizontal coke oven with vertical heating flues, said oven being raised and provided with subways underneath the oven to permit the operation of the regulating devices, the combination with each of said vertical flues of a separate checkerwork regenerator for preheating the air and another separate checkerwork regenerator .for the preheating of t-he gas, both checkerwork chambers being connected to the flue at its lower end, all air regenerators and all gas regenerators for one heating wall being arranged eac-h in one continuous row and both air and gas regenerators being situated in the space between the Hoors of the oven chambers and the ceilings of the subways.

In testimony whereof l afx my signature.

WALTHER HIBY. 

